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Gobiiformes (Gobies) >
Gobiidae (Gobies) > Gobionellinae
Etymology: Rhinogobius: Greek, rhinos = nose + Latin, gobius = gudgeon (Ref. 45335); yonezawai: Named for Mr. Toshihiko Yonezawa.
Eponymy: Toshihiko Yonezawa is a Japanese ichthyologist who works for the Foundation of Kagoshima Environmental Research and Service. [...] (Ref. 128868), visit book page.
Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied
Ecologie
; zoet water demersaal; amfidroom (Ref. 123096). Subtropical
Asia: Japan, Ryukyu Is.
Grootte / Gewicht / Leeftijd
Maturiteit: Lm ?  range ? - ? cm
Max length : 7.5 cm SL mannelijk / geslacht onbekend; (Ref. 123096); 6.0 cm SL (female)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Dorsale stekels (totaal) : 7; Dorsale zachte stralen (totaal) : 8; Anale stekels: 1; Anale zachte stralen: 8; Wervels: 26. This species is distinguished from its congeners by the following characters: longitudinal scales 35-39; vertebrae 10 + 16 + 26; males with first dorsal fin high and falcate, non-filamentous, the longest seond and/or third spine(s) extending posteriorly to a space between bases of first and fourth second dorsal-fin branched rays when adpressed; fifth pelvic-fin segmented ray divided into 4 branches at its first (most proximal) segmenting point; pectoral-fin base and the prepelvic areas are naked; belly with small cycloid scales except for a narrow area around ventral midline or anterior half of ventral midline; longitudinal rows of sensory-papillae on cheek with no tranverse rows. Colouration: pectoral fin base with a black oval spot; temporal region with 2 red stripes, reaching posteriorly to, or around, dorsum of body below the first dorsal fin; caudal fin of males with 6-8 vertical deep-red or reddish-orange lines, in females, a black bifurcated blotch posteriorly at the base when alive or freshly collected (Ref. 123096).
Body shape (shape guide): elongated; Cross section: oval.
A species that is amphidromous but landlocked in few freshwater reservoirs ok Okinawa-jima I. (Ref. 123096).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Suzuki, T., N. Oseko, S. Kimura and K. Shibukawa, 2020. Two new species of torrential gobies of the Genus Rhinogobius from the Ryukyu Islands, Japan. Bull. Kanagawa Prefect. Mus. (Nat. Sci.) 49:7-28. (Ref. 123096)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))
Gevaar voor de mens
Harmless
Gebruik door de mens
Visserij: van geen belang
Tools
Speciale rapporten
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Internetbronnen
Schattingen op basis van modellen
Fylogenetische diversiteitsindex (Ref. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00813 (0.00359 - 0.01840), b=3.08 (2.91 - 3.25), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
Trofisch niveau (Ref. 69278) |
3.3 ±0.4 se; based on size and trophs of closest relatives |
Weerstandsvermogen (Ref. 120179) |
Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Preliminary K or Fecundity.). |
Kwetsbaarheid van de visserij (Ref. 59153) |
Low vulnerability (17 of 100). 🛈 |